Title:
ステッピングモータ
Document Type and Number:
Japanese Patent JP3978332
Kind Code:
B2
Abstract:
A stepping motor includes a pair of drive coils arranged to sandwich a magnetic rotor in the axial direction of a rotor shaft in order to decrease the motor size. The drive coils are configured to be annular around the rotor shaft that extends in both directions from the magnetic rotor. A pair of cylindrical yokes are provided to enclose the drive coils. A pair of sintered bearings that support the rotational movement of the rotor shaft are made of a magnetic material, and the cylindrical yokes and the sintered bearings are formed together.
Inventors:
Yoshinori Ogawa
Application Number:
JP2001372204A
Publication Date:
September 19, 2007
Filing Date:
December 06, 2001
Export Citation:
Assignee:
Nidec Sankyo Co., Ltd.
International Classes:
H02K5/04; H02K37/14; H02K1/14; H02K5/167
Domestic Patent References:
| JP56070609A | ||||
| JP3117370U |